{"id":649,"date":"2026-01-18T00:01:07","date_gmt":"2026-01-17T16:01:07","guid":{"rendered":"https:\/\/vlog.xiaoyan.sbs\/?p=649"},"modified":"2026-01-19T23:45:31","modified_gmt":"2026-01-19T15:45:31","slug":"%e8%a7%a3%e5%86%b3%e8%b0%b7%e6%ad%8c%e4%bc%bc%e4%b9%8e%e6%ad%a3%e5%9c%a8%e9%80%b2%e8%a1%8c%e9%98%bb%e6%96%b7%e6%9c%8d%e5%8b%99-dos-%e6%94%bb%e6%93%8a%ef%bc%8c%e9%80%99%e9%81%95%e5%8f%8d%e4%ba%86","status":"publish","type":"post","link":"https:\/\/vlog.xiaoyan.sbs\/?p=649","title":{"rendered":"\u89e3\u51b3\u8c37\u6b4c\u4f3c\u4e4e\u6b63\u5728\u9032\u884c\u963b\u65b7\u670d\u52d9 (DoS) \u653b\u64ca\uff0c\u9019\u9055\u53cd\u4e86\u300aGoogle Cloud Platform \u670d\u52d9\u689d\u6b3e\u300b\u6216\u300a\u4f7f\u7528\u9650\u5236\u653f\u7b56\u300b(\u5305\u542b\u60a8\u53ef\u80fd\u6b63\u5728\u4f7f\u7528\u7684 Google API \u9069\u7528\u7684\u670d\u52d9\u689d\u6b3e) \u7684\u6b65\u9aa4"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u5177\u4f53\u89e3\u51b3\u529e\u6cd5\uff1a<\/p>\n\n\n\n

1\u3001\u5728\u9632\u706b\u5899\u91cc\u52a0\u5165\u7b56\u7565\uff0c\u901a\u5e38\u662f\u56e0\u4e3a\u5b9d\u5854\u9762\u677f\u7684\u6f0f\u6d1e\u5bfc\u81f4\u7684\u95ee\u9898<\/p>\n\n\n\n

1\uff09\u9996\u5148\u6267\u884c\uff1a<\/p>\n\n\n\n

ss -tunap<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u8f93\u51fa\u5177\u4f53\u7684BT\u9762\u677f\u7684\u7aef\u53e3\uff0c\u7136\u540e\u9488\u5bf9\u8be5\u7aef\u53e3\u53bb\u8c37\u6b4c\u540e\u53f0\u53bb\u505a\u7b56\u7565\uff0c\u5177\u4f53\u7b56\u7565\uff1a  \u91cc\u9762\u7684IP\u8303\u56f4\u9700\u8981\u6362\u6210\u4f60\u81ea\u5df1\u7684\u8bbf\u95eeIP\u548c\u6700\u4f4e\u7aef\u53e3\uff0c\u6ce8\u610f\u4e0d\u8981\u7528\u6211\u7684\u7aef\u53e3<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u5bf9\u7aef\u53e3\u8bbf\u95ee\u8fdb\u884c\u9650\u5236<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u4fdd\u5b58\u540e\uff0c\u5f00\u59cb\u6267\u884c\u7b2c\u4e8c\u6b65\u9aa4<\/p>\n\n\n\n
2\u3001\u6740\u6b7b\u540e\u53f0\u8fdb\u7a0b\u5e76\u4e14\u5378\u8f7d\u6389\u540e\u95e8\u7a0b\u5e8f<\/p>\n\n\n\n
\u5177\u4f53\u539f\u56e0\u662f\uff1a<\/p>\n\n\n\n
\u274c \u9ad8 CPU + \u5927\u91cf\u5f02\u5e38\u5916\u8054 \u2192 \u89e6\u53d1 Google DoS \u8b66\u544a<\/strong><\/p>\n\n\n\n
\u274c \/etc\/kswpad<\/code><\/p>\n\n\n\n
\u274c \/root\/backup_kswpad\/kswpad<\/code><\/p>\n\n\n\n
\u274c DbSecuritySpt<\/code><\/p>\n\n\n\n
\u274c rc \u542f\u52a8\u811a\u672c + cron \u53cd\u590d\u62c9\u8d77<\/p>\n\n\n\n
\u6240\u4ee5\u9700\u8981\u4e00\u6b65\u6b65\u6740\u6389\u8fdb\u7a0b\u5378\u8f7d\u6389\u7a0b\u5e8f<\/p>\n\n\n\n
1\uff09\u5728\u670d\u52a1\u5668\u91cc\u786e\u8ba4\u6709\u54ea\u4e9b\u8bbf\u95ee\u7684\u540e\u95e8\u7a0b\u5e8f\uff0c\u4e5f\u5c31\u662f\u5360\u7528CPU\u6700\u9ad8\u7684\u7a0b\u5e8f<\/p>\n\n\n\n
ps aux --sort=-%cpu | head -20<\/code><\/pre>\n\n\n\n
2\uff09\u6267\u884c\u5b8c\u6210\u540e\u80fd\u591f\u770b\u5230\uff1a \u4e00\u4e2a\u53eb\u201ckswpad\u201d\u7684\u7a0b\u5e8f\u5360\u7528\u6700\u9ad8\uff0c\u8fd9\u5e94\u8be5\u662f\u8c01\u5728\u901a\u8fc7\u6f0f\u6d1e\u690d\u5165\u7684\u540e\u95e8\u7a0b\u5e8f\uff0c\u8bf4\u660e\u6709\u540e\u95e8\u513f\u7a0b\u5e8f\u5728\u6267\u884c\uff0c\u6240\u4ee5\u9700\u8981\u5c06\u5176\u5378\u8f7d<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
3\uff09\u6740\u6b7b\u8fdb\u7a0b\uff0c\u7136\u540e\u67e5\u770b<\/p>\n\n\n\n
kill -9 1547     #\u6740\u6b7b\u8fdb\u7a0b\nls -l \/etc\/kswpad   #\u770b\u8fdb\u7a0b\u662f\u5426\u5b58\u5728\nfile \/etc\/kswpad    #\u67e5\u770b\u7a0b\u5e8f\u4f4d\u7f6e\nmd5sum \/etc\/kswpad  #\u67e5\u770b\u4ed6\u7684MD5\u503c\nrm -f \/etc\/kswpad    #\u6267\u884c\u5220\u9664\u6587\u4ef6\u6307\u4ee4<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
4\uff09\u505c\u6b62\u60a8\u7684\u670d\u52a1\uff0c\u5305\u62ecnginx\\mysql\\php\u7b49\u670d\u52a1\uff0c\u4e00\u5b9a\u8981\u505c\u6b62\u8fd9\u4e9b\u7684\u76f8\u5173\u670d\u52a1<\/p>\n\n\n\n
5\uff09\u7136\u540e\u786e\u8ba4\u4e0b\u662f\u5426\u5b58\u5728\u540e\u53f0\u7684\u5b9a\u65f6\u4efb\u52a1<\/p>\n\n\n\n
crontab -l\nls -l \/etc\/cron*<\/code><\/pre>\n\n\n\n
\u770b\u5230\u8fd9\u91cc\u8bf4\u660e\u4ed6\u5b58\u5728\u5b9a\u65f6\u4efb\u52a1\u5728\u540e\u53f0\u7ef4\u6301\u4ed6\u603b\u662f\u91cd\u542f<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u7136\u540e\u6267\u884c<\/p>\n\n\n\n
grep -R \"kswpad\" \/etc\/systemd \/etc\/rc*.d \/etc\/init* \/etc\/cron* \/lib\/systemd \/root \/home<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u7136\u540e\u4f1a\u770b\u5230\u7a0b\u5e8f\u5f88\u987d\u56fa\uff0c\u6709\u597d\u591a\u7684\u5730\u65b9\u90fd\u6709\u8fd9\u4e2a\u7a0b\u5e8f\uff0c\u7136\u540e\u6839\u636e\u8def\u5f84\u76f4\u63a5\u90fd\u5220\u9664\u6389\u8be5\u7a0b\u5e8f<\/p>\n\n\n\n
rm -f \/etc\/rc1.d\/S97DbSecuritySpt \nrm -f \/etc\/rc2.d\/S97DbSecuritySpt \nrm -f \/etc\/rc3.d\/S97DbSecuritySpt \nrm -f \/etc\/rc4.d\/S97DbSecuritySpt \nrm -f \/etc\/rc5.d\/S97DbSecuritySpt\nrm -f \/etc\/init.d\/DbSecuritySpt<\/code><\/pre>\n\n\n\n
\u7136\u540e\u518d\u6267\u884c<\/p>\n\n\n\n
crontab -l           #\u770b\u5b9a\u65f6\u4efb\u52a1\u91cc\u662f\u5426\u8fd8\u5b58\u5728\u8be5\u7a0b\u5e8f\ngrep -R \"kswpad\" \/etc\/cron* #\u6240\u6709\u7684\u8fd9\u4e2a\u5b9a\u65f6\u4efb\u52a1\ncrontab -r    <\/code><\/pre>\n\n\n\n
\u6700\u540e\u6267\u884c<\/p>\n\n\n\n
grep kswpad\nps aux --sort=-%cpu | head -20<\/code><\/pre>\n\n\n\n
\u786e\u8ba4\u8fdb\u7a0b\u91cc\u5df2\u7ecf\u6ca1\u6709 kswpad\u8fd9\u4e2a\u7a0b\u5e8f\uff0c\u8bc1\u660e\u5df2\u7ecf\u6d88\u9664\u5b8c\u6bd5<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u81f3\u6b64\u5371\u673a\u89e3\u9664\uff0c\u53bb\u8c37\u6b4c\u7533\u8bf7\u5df2\u7ecf\u8fdb\u884c\u4e86\u63aa\u65bd\u540e\u7684\u7533\u8bf7\u3002<\/p>\n\n\n\n
<\/p>\n\n\n\n
<\/p>\n\n\n\n
\u5982\u679c\u8fd8\u662f\u5220\u9664\u4e0d\u6389\u8fd8\u53ef\u7ee7\u7eed\u6267\u884c<\/p>\n\n\n\n
# \u5148\u6740\u6389\u8fdb\u7a0b\npkill -9 -f \"\/usr\/lib\/systemd\/system\/kswpad\"\n\n# \u518d\u5220\u9664\u6587\u4ef6\nrm -f \/usr\/lib\/systemd\/system\/kswpad\n\nps aux | grep kswpad | grep -v grep\n\n\npkill -9 -f \"\/usr\/lib\/systemd\/system\/kswpad\"\n\n# systemd \u670d\u52a1\nsystemctl list-unit-files | grep -E \"kswpad|conlab\"\n\n# rc.d \/ init.d \u811a\u672c\nls -l \/etc\/init.d\/ | grep -E \"kswpad|conlab\"\nls -l \/etc\/rc*.d\/ | grep -E \"kswpad|conlab\"\n\n# cron \u4efb\u52a1\ngrep -R \"kswpad\\|conlab\" \/etc\/cron* \/var\/spool\/cron \/root\ncrontab -l\n\n\u5220\u9664\u6240\u6709\u627e\u5230\u7684\u6587\u4ef6\u548c cron \u4efb\u52a1\nrm -f \/etc\/init.d\/DbSecuritySpt\nrm -f \/etc\/rc*.d\/*DbSecuritySpt\nrm -f \/usr\/lib\/systemd\/system\/kswpad\nrm -f \/etc\/cron.d\/kswpad \/etc\/cron.d\/conlab\ncrontab -l | grep -v \"kswpad\\|conlab\" | crontab -\n\u6216\npkill -9 -f \"\/usr\/lib\/systemd\/system\/kswpad\"\nrm -f \/usr\/lib\/systemd\/system\/kswpad\nrm -f \/etc\/cron.d\/kswpad \/etc\/cron.d\/conlab\ncrontab -l | grep -v \"kswpad|conlab\" | crontab -<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5177\u4f53\u89e3\u51b3\u529e\u6cd5\uff1a 1\u3001\u5728\u9632\u706b\u5899\u91cc\u52a0\u5165\u7b56\u7565\uff0c\u901a\u5e38\u662f\u56e0\u4e3a\u5b9d\u5854\u9762\u677f\u7684\u6f0f\u6d1e\u5bfc\u81f4\u7684\u95ee\u9898 1\uff09\u9996\u5148\u6267\u884c\uff1a \u8f93\u51fa\u5177\u4f53\u7684BT\u9762\u677f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-649","post","type-post","status-publish","format-standard","hentry","category-tech"],"_links":{"self":[{"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=\/wp\/v2\/posts\/649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=649"}],"version-history":[{"count":3,"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=\/wp\/v2\/posts\/649\/revisions"}],"predecessor-version":[{"id":665,"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=\/wp\/v2\/posts\/649\/revisions\/665"}],"wp:attachment":[{"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vlog.xiaoyan.sbs\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}